| 摘要 |
<p>Bioreactive material of the glass or partially crystallised glass type for a bone prosthesis or dental implant, welding by chemical bonding with a bony tissue, this bond not presenting ossification defects and having at the same time a small thickness and a greatly improved mechanical strength, the said material having a low expansion coefficient and a very good adhesiveness to structural materials such as Ti, which can be employed for the manufacture of composite articles, characterised in that it contains, in % by weight, 5 to 14 of Na2O, 0 to 12% of P2O5, 49 to 57% of SiO2, the remainder consisting of not more than 33% of a mixture of CaO and CaF2, the latter being between 0.5 and 7%.</p> |
